Just upgrading the kernel on one of those "LTS" systems so that developers could start being ready for a kernel that wasn't 3.10 (and it turned out that core co

Just upgrading the kernel on one of those "LTS" systems so that developers could start being ready for a kernel that wasn't 3.10 (and it turned out that core component of our app crashed due to... memory layout bug that accidentally worked on old kernels)... I had to start by figuring all bits necessary to build not just kernel, but also external modules and attendant tools, using separate backported compiler because then-current LTS kernel wouldn't compile using distro-supplied GCC.